CHARACTERS OF THE SPECIES. 



161 



Sp. Gravity. 



S-5...4-3. 



OCTAHEDRON WITH A SQUARE BASE. 



Sp. Gravity. 



inclination 

 of PonP" 

 Fig. 25. 



Various Observations. 



1-4...1-6. 



6-5.. .6-9. 



4-1...4-3. 

 2-21. 



6-0.. .6-1. 



4-T...4-8. 

 3-8.. .3-9. 

 6-3.. .7-1. 



93 0' 



130 15 



125 30 



128 40 



117 30 



136 47 



67 50 



Cleaves with difficulty, perpendic- 

 ularly to the axis. 



Cleavage at right angles to the 

 axis. 



14* 



